• Chamber-style boresighter: Fits directly into .223 / 5.56 Remington chamber for fast, repeatable alignment.

• Visible red laser: 632–660 nm wavelength, <5 mW output (Class IIIA) projects a clear aiming dot.

• Ready for optics: Works with scopes, holographic red dots, and iron sights.

• Durable brass housing: Machined brass looks and feels like a cartridge while protecting the laser module.

• Easy on/off: Insert batteries and screw the cap to turn on; remove batteries to turn off.

• Portable power: Uses LR41 batteries (included) with ~1.5–2 hours continuous runtime.

• Effective range: Best used at 15–100 yards; 20–30 yd (25 yd recommended) gets you “on paper” quickly.

Product Description

This .223 / 5.56 Rem chamber-style red laser bore sighter is a compact, self-contained solution for zeroing and sight alignment without firing live rounds. The unit’s machined brass housing resembles a cartridge but contains a precision laser module and the battery compartment. When inserted into the chamber and the action gently closed, the laser projects a red dot aligned with the bore axis so you can adjust windage and elevation on your scope or sight to match point-of-aim — fast and ammo-free.

Ideal for use with scopes, holographic/red dot sights, and iron sights, this tool is perfect for initial sighting, range setup, or field checks. The visible red laser (632–660 nm) produces a small, well-defined dot (approximately 1.5″ at 100 yards) and runs on inexpensive LR41 button cells (included).

How to Use

1. Ensure the firearm is unloaded and pointed in a safe direction; remove magazine and clear the chamber.

2. Insert LR41 batteries into the boresighter and screw the cap to power the unit on.

3. Place the boresighter fully into the .223/5.56 chamber and gently close the action (do not chamber like a live round).

4. Place a target at 20–30 yards (25 yd recommended) — you can use distances up to 100 yd for finer adjustment.

5. Aim the rifle at the target and adjust windage/elevation on your scope or sight until the point-of-aim matches the laser dot.

6. Remove the boresighter and perform live-fire confirmation and final tuning.

Safety & Maintenance

• Never look directly into the laser or point it at people, animals, or reflective surfaces.

• Even low-power lasers can damage eyesight; avoid direct or prolonged exposure.

• Keep out of reach of children.

• Remove batteries for long-term storage to prevent leakage.

• Follow all local laws and range rules when using the device.

Package Contents

• .223 / 5.56 Rem chamber-style red laser bore sighter (brass) ×1

• LR41 battery set ×1